Vivien K Zak, LCSW-R
NPI 1871582510 · Clinical Social Worker · Brooklyn, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vivien K Zak, LCSW-R is a Clinical Social Worker provider in Brooklyn, NY (NPI 1871582510).
Provider details
- NPI number
- 1871582510
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW-R
- Sex
- Female
- Sole proprietor
- Yes
- License
- R045147-1 (NY)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-15
- Last updated
- 2022-08-03
- Certified
- 2022-08-03
Frequently asked questions
- What is Vivien K Zak's NPI number?
- Vivien K Zak's National Provider Identifier (NPI) is 1871582510, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivien K Zak's specialty?
- Vivien K Zak is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Vivien K Zak located?
- Vivien K Zak's practice location on file with NPPES is 36 Plaza St E Ste 1g, Brooklyn, NY 11238-5039.
- What is Vivien K Zak's phone number?
- The practice phone number listed in the NPPES registry for Vivien K Zak is (917) 804-0477.
- Does Vivien K Zak accept Medicare?
- Vivien K Zak is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vivien K Zak's NPI active?
- Yes — Vivien K Zak's NPI (1871582510) is active in the NPPES registry as of the last update on 2022-08-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.